【单选题】Watch this,Mum! I_______________stand on one leg.
【单选题】He attended the party without _______________.
【单选题】Watch this, Mum; I _______ stand on leg.
【单选题】He came to the dinner without ______ .
【简答题】计算平面机构自由度的公式为 ,应用此公式时应注意判断: A. 铰链, B. 自由度, C. 约束。
【简答题】A.He has a better idea. B.He wants to be invited. C.It will depend on the weather. D.He is sure to go for an outing.
【简答题】一票从广州到纽约的冻鸡,要赶在圣诞节前到达,收货人办完海关手续后前来提货时,发现这件货物由于没有冷冻保存,致使该批货物已出现异味,收货人当即提出异议。经调查,造成货物损失的原因是托运人在填写空运单时发生错误,托运人将“冷冻保管”错写为“冷藏保管”,由于保管不当,使货物变质。 问:在这种情况下,应由谁负责?